Hi, I’m an FPV pilot, I’m 23 years old and I recently got into this field. One day I thought about building a windsock and using it for its intended purpose—to understand both the wind direction and its strength. It’s a completely amateur project made with a tube and a lightweight plastic bag. I’d like some advice on how to improve it, because the behavior it shows, even at higher wind speeds, seems quite unusual and unrealistic to me.

I believe its behavior is different from real windsocks, because regardless of the wind direction, it tends to point downward instead of positioning itself horizontally. This makes it difficult to read according to standard interpretation guidelines.

I’m want to learn how to build a functional one so I'm open to any suggestions on how to fix and improve it.